FulfillFlex – Bulk Fulfillment vs ShipCelero
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for FulfillFlex, Jun 7, 2026 for ShipCelero.
The short answer
- ShipCelero lists 11 features FulfillFlex’s listing doesn’t mention, including Bulk printing, Carrier selection, Customs documents.
Head to head
Starter
- · 100 fulfillments / month
- · 160+ carriers + custom carriers
- · Auto column mapping (9 languages)
- · Bulk upload (CSV, XLSX, XLS, TSV)
- · Email support
- · Multi-file batch upload
Pro
- · 1,000 fulfillments / month
- · 160+ carriers + custom carriers
- · Auto column mapping (9 languages)
- · Bulk upload (CSV, XLSX, XLS, TSV)
- · Multi-file batch upload
- · Preview + retry failed
Plus
- · 160+ carriers + custom carriers
- · Auto column mapping
- · Bulk upload (CSV, XLSX, XLS, TSV)
- · Dedicated account manager
- · Multi-file batch upload
- · Preview + retry failed orders
Standard
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureStop copy-pasting tracking numbers one row at a time. Drop your spreadsheet — CSV, XLSX, XLS, or TSV — and FulfillFlex turns it into Shopify fulfillments in three clicks. Columns auto-detect in 9 languages. Carrier names match even with typos. Every order shows up in a smart preview before anything ships, so you spot issues before customers do. If a row fails, retry only that one — never the whole batch.
ShipCelero helps merchants prepare shipments from Shopify orders with less repeated typing. Connect your Shopify store to a ShipCelero account to keep sender details, recipient details, product information, and draft shipments available when preparing future shipments. Merchants can reuse saved shipment details, continue draft shipments later, and keep shipping information organized in one place.
- Bulk fulfill orders from CSV, XLSX, XLS, or TSV files
- Auto-detect columns in English and French + fuzzy carrier matching
- Preview every order before fulfilling — spot issues before shipping
- One-click rollback — revert fulfillments to redo them
- Generate shipping labels without leaving Shopify Admin
- Create labels for multiple orders in one batch
- Split one order into multiple packages with separate labels
- Sync tracking numbers and fulfill orders automatically
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  FulfillFlex |  ShipCelero |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | FulfillFlex | ShipCelero |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 1 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | FulfillFlex | ShipCelero |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $4.99/month | No monthly plan listed |
| Longest free trial | 14 days | Not listed |
| Plans listed | 3 | 1 |
Listing
| Measure | FulfillFlex | ShipCelero |
|---|---|---|
| Shopify category rank | #651(ahead) | #1030 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 19, 2026 | Jun 4, 2026 |
| Languages | 1 | 1 |
| Developer | MPC TRADES | ShipCelero |
FAQ
FulfillFlex and ShipCelero: common questions
- What features does each app list that the other doesn’t?
- FulfillFlex lists 2 the others don’t mention, such as Order sync, Order updates. ShipCelero lists 11 the others don’t mention, such as Bulk printing, Carrier selection, Customs documents, Label creation. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for FulfillFlex, Jun 7, 2026 for ShipCelero; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for FulfillFlex, Jun 7, 2026 for ShipCelero. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.